Cow Creek, SD Public Records
Cow Creek is an unincorporated community (a census-designated place) in Sully County, South Dakota, with an estimated population of 69 (U.S. Census Bureau, 2020–2024 American Community Survey) and 1.8 square miles of land.
🏢 Local Government for Cow Creek
Cow Creek is not an incorporated city or town, so it has no city hall, town clerk or local government of its own. Local government services and records for Cow Creek come from Sully County and from the township or town government whose territory includes it. Birth and death certificates, marriage records, deeds and court files come from the county and state offices below.
Population figure: U.S. Census Bureau, 2020–2024 American Community Survey 5-year estimate for the Cow Creek census-designated place (a statistical area, not a government).
↑ Back to record types🏛️ County Courthouse & Records Office for Cow Creek
Cow Creek is in Sully County. In South Dakota, deeds, mortgages and other land records are recorded by the county Register of Deeds. Divorce cases in South Dakota are heard by the Circuit Court in each county. Wills and estates in South Dakota are handled by the Circuit Court in each county.
📍 Sully County at a Glance
| County | Sully County |
| County population (2024 est.) | 1,468 Source: www2.census.gov ↗ |
⚖️ Sully County Clerk of Court
| Address | 700 Ash Avenue, Onida, SD 57564-0188 |
| Directions | Get directions ↗ |
| Phone | (605) 258-2535 |
| Hours | 8:00 a.m. to noon, Monday through Friday |
| Records available | South Dakota Circuit Court and magistrate court case records for the county (civil, criminal, divorce, probate, small claims) |
| Official website | Not stated |
| Sources | ujs.sd.gov/…/sully-county ↗ |
| Last verified | October 17, 2026 |
See the full Sully County records page →
↑ Back to record types📋 Where to Get Records for Cow Creek
Where to get the most-requested public records for people and property in Cow Creek, SD:
📋 Cow Creek Records Guide
| Birth & death certificates | South Dakota Department of Health – Vital RecordsCertified birth and death certificates for South Dakota are issued by the state vital records office; in some places a county or local office can also issue copies. |
| Deeds & property records | In South Dakota, deeds, mortgages and other land records are recorded by the county Register of Deeds. |
| Court cases & divorce | Sully County courthouse. Divorce cases in South Dakota are heard by the Circuit Court in each county. |
| Wills & estates | Wills and estates in South Dakota are handled by the Circuit Court in each county. |
| State court system | South Dakota Unified Judicial System |
| Sex offender registry | South Dakota Sex Offender Registry |